G - Physics – 05 – D
Patent
G - Physics
05
D
341/32.1
G05D 23/19 (2006.01) F24D 19/10 (2006.01) G04C 23/28 (2006.01) G05D 23/24 (2006.01) H01H 43/00 (2006.01) H01H 43/12 (2006.01)
Patent
CA 1145012
ABSTRACT OF THE DISCLOSURE CONTROL ARRANGEMENTS FOR HEATING SYSTEMS A control arrangement is provided for a heating system having heat outlets each controlled by a solenoid valve (210). Each heat outlet is connected to a pair of thermostatic switches (411, 413) operative at different temperatures. A time switch included in a central control means (108) is operative to selectively energise a pair of bus-bars (530, 532) at different times, thereby to provide common output signals for actuating the heat outlets via different thermostatic switches (411, 413) at different times to provide different heat outputs during differ- ent parts of a predetermined period of time (e.g. 24 hours). The central control means (108) includes a plurality of manual switches (540) each connecting the time switch output bus-bars (530, 532) to the thermostatic switches (411, 413) of an associated one of the heat outlets to manually set the heat output of the heat outlet. The time switch and each manual switch (540) cooperate in such a manner that each overrides the other as appropriate to keep the area heated by each outlet at an appropriate temperature.
344051
G. Ronald Bell & Associates
Plympton Patents Limited
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